CA2417241A1 - Method and apparatus for gated ack/nak channel in a communication system - Google Patents

Method and apparatus for gated ack/nak channel in a communication system Download PDF

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Publication number
CA2417241A1
CA2417241A1 CA002417241A CA2417241A CA2417241A1 CA 2417241 A1 CA2417241 A1 CA 2417241A1 CA 002417241 A CA002417241 A CA 002417241A CA 2417241 A CA2417241 A CA 2417241A CA 2417241 A1 CA2417241 A1 CA 2417241A1
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CA
Canada
Prior art keywords
ack
nak
channel
recited
data unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002417241A
Other languages
French (fr)
Other versions
CA2417241C (en
Inventor
Paul E. Bender
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qualcomm Inc
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2417241A1 publication Critical patent/CA2417241A1/en
Application granted granted Critical
Publication of CA2417241C publication Critical patent/CA2417241C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1874—Buffer management
    • H04L1/1877—Buffer management for semi-reliable protocols, e.g. for less sensitive applications like streaming video
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1809—Selective-repeat protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1848—Time-out mechanisms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1854—Scheduling and prioritising arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L2001/125—Arrangements for preventing errors in the return channel

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Communication Control (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Alarm Systems (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Near-Field Transmission Systems (AREA)
  • Radio Relay Systems (AREA)

Abstract

A method and apparatus are disclosed for transmitting ACK/NAK information in a communication system including a transmitter (74) for transmitting ACK/NAK information on an ACK/NAK channel, and a channel gate (699) for gating the ACK/NAK channel based on whether a matching preamble is detected in a receiv ed data unit by receiver (106). The data unit is a first data unit in a series of data units comprising a data packet. The channel gate (699) prevents transmission of the ACK/NAK channel when receiver (106) has failed to receiv e the matching preamble in the data unit.

Claims (18)

1. An apparatus in a communication system comprising:
a transmitter operative to transmit ACK/NAK information on an ACK/NAK channel;
a channel gate for gating said ACK/NAK channel based on whether a companion receiver has detected a matching preamble in a data unit received by said receiver.
2. The apparatus as recited in claim 1 wherein said data unit is a first data unit in a series of data units comprising a data packet.
3. The apparatus as recited in claim 1 wherein said channel gate prevents transmission of said ACK/NAK channel when said receiver has failed to receive said matching preamble in said data unit.
4. The apparatus of claim 1 wherein said transmitter includes:
a BPSK modulator for modulating said ACK/NAK
information;
a multiplier for Walsh covering a result of said BPSK
modulator to produce Walsh covered ACK/NAK information for transmission on said ACK/NAK channel.
5. The apparatus of claim 1 further comprising:
a summer for summing said ACK/NAK channel and a data rate control/pilot channel.
6. The apparatus of claim 1 wherein said ACK/NAK channel is employed for duration of a portion of a time slot.
7. The apparatus of claim 1 wherein slot timing of said ACK/NAK
channel is skewed by a portion of a slot time from a slot timing used in said communication system.
8. The apparatus of claim 1 wherein said ACK/NAK channel is transmitted by a portion of a slot time in advance of a slot timing used in said communication system.
9. The apparatus of claim 5 further comprising:
a reverse channel spreader operative to spread a result of said summer for transmission from said transmitter.
10. A method in a communication system comprising:
transmitting ACK/NAK information on an ACK/NAK channel;
gating said ACK/NAK channel based on whether a matching preamble is detected in a received data unit.
11. The method as recited in claim 10 wherein said data unit is a first data unit in a series of data units comprising a data packet.
12. The method as recited in claim 10 wherein said gating prevents transmission of said ACK/NAK channel when said receiver has failed to receive said matching preamble in said data unit.
13. The method as recited in claim 10 wherein transmission of said ACK/NAK information on said ACK/NAK channel is employed for a duration of a portion of a time slot.
14. The method as recited in claim 10 wherein said ACK/NAK channel slot timing is skewed by a portion of a slot time from a slot timing used in said communication system.
15. The method of claim 10 wherein said ACK/NAK channel is transmitted by a portion of a slot time in advance of a slot timing used in said communication system.
16. The method as recited in claim 10 further comprising:
modulating said ACK/NAK information according to a BPSK
modulation scheme;
multiplying, for Walsh covering, a result of said modulating with a Walsh code to produce Walsh covered ACK/NAK information.
17. The method as recited in claim10 further comprising:
summing said ACK/NAK channel and a data rate control/pilot channel.
18. The method as recited in claim 17 further comprising:
spreading a result of said summing for transmission.
CA2417241A 2000-09-01 2001-08-28 Method and apparatus for gated ack/nak channel in a communication system Expired - Lifetime CA2417241C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/653,744 US7042869B1 (en) 2000-09-01 2000-09-01 Method and apparatus for gated ACK/NAK channel in a communication system
US09/653,744 2000-09-01
PCT/US2001/026946 WO2002019605A2 (en) 2000-09-01 2001-08-28 Method and apparatus for gated ack/nak channel in a communication system

Publications (2)

Publication Number Publication Date
CA2417241A1 true CA2417241A1 (en) 2002-03-07
CA2417241C CA2417241C (en) 2011-03-15

Family

ID=24622142

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2417241A Expired - Lifetime CA2417241C (en) 2000-09-01 2001-08-28 Method and apparatus for gated ack/nak channel in a communication system

Country Status (20)

Country Link
US (1) US7042869B1 (en)
EP (1) EP1314276B1 (en)
JP (1) JP4933019B2 (en)
KR (1) KR100812434B1 (en)
CN (1) CN1264300C (en)
AT (1) ATE403293T1 (en)
AU (2) AU2001288508B2 (en)
BR (1) BRPI0113647B1 (en)
CA (1) CA2417241C (en)
DE (1) DE60135129D1 (en)
ES (1) ES2307642T3 (en)
HK (1) HK1061322A1 (en)
IL (2) IL154308A0 (en)
MX (1) MXPA03001718A (en)
NO (1) NO20030949L (en)
NZ (1) NZ524015A (en)
RU (1) RU2282942C2 (en)
TW (1) TW560136B (en)
UA (1) UA75602C2 (en)
WO (1) WO2002019605A2 (en)

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Also Published As

Publication number Publication date
WO2002019605A2 (en) 2002-03-07
EP1314276B1 (en) 2008-07-30
NO20030949L (en) 2003-04-30
KR20030027101A (en) 2003-04-03
BRPI0113647B1 (en) 2015-07-28
KR100812434B1 (en) 2008-03-10
JP2004512708A (en) 2004-04-22
TW560136B (en) 2003-11-01
US7042869B1 (en) 2006-05-09
CN1476694A (en) 2004-02-18
CA2417241C (en) 2011-03-15
ATE403293T1 (en) 2008-08-15
NO20030949D0 (en) 2003-02-28
HK1061322A1 (en) 2004-09-10
ES2307642T3 (en) 2008-12-01
JP4933019B2 (en) 2012-05-16
NZ524015A (en) 2004-11-26
DE60135129D1 (en) 2008-09-11
CN1264300C (en) 2006-07-12
UA75602C2 (en) 2006-05-15
AU2001288508B2 (en) 2006-07-06
EP1314276A2 (en) 2003-05-28
BR0113647A (en) 2006-05-09
AU8850801A (en) 2002-03-13
MXPA03001718A (en) 2003-09-22
RU2282942C2 (en) 2006-08-27
WO2002019605A3 (en) 2002-07-25
IL154308A0 (en) 2003-09-17
IL154308A (en) 2008-12-29

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Effective date: 20210830